Door or shutter straightener



J. KAISER.

Patented June 10, 1890.

DOOR OR SHUTTER STRAIGHTBNER.

(No Model.)

No. v430,032.

NORRIS puns 50., mow-mun. WASHINGTON n c UNITED STATES PATENT OFFICE.

JACOB KAISER, OF ST. LOUIS, MISSOURI.

DOOR OR SHUTTERSTRAIGHTENER.

SPECIFICATION forming part of Letters Patent No. 430,032, dated June 10,1890.'

Application filed January 27, 1890. $erial No. 338,252. (No model.)

To all whom, it may concern:

Be it known that I, JACOB KAISER, of the city of St. Louis, in the Stateof Missouri, have invented a certain new and useful Improvement in Dooror Shutter Straighteners, of which the following is a full, clear, andexact description, reference'being had to the accompanying drawings,forming part of this specification. I

This invention relates to devices for straightening doors, shutters, andother like frames that have become warped in seasoning; and theinvention consists in features of novelty hereinafter fully described,and pointed out in the claims.

. Figure I is an elevation of a door the view side of which has aconcave warp, and shows the push member of my straightening devicesecured thereto to reduce the warp. Fig. II is an enlarged detaillongitudinal section, and shows one of the terminal attachments of thepush member of the device shown in Fig. I. Fig. III is an enlargeddetail front view of the central coupling and attachment clampingblock.Fig. IV is a vertical section taken on line V V, Fig. 1V, and shows themeans of attachment of the clamping-block. Fig. V is a vertical sectiontaken on line VI VI, Fig. IV, and shows the clamping-rods in theircoupling-seats in the block. Fig. VI is an enlarged detail view of thedoor adjacent to the lock attachment when said lock projects from theface of the door and shows the clamping-rod bent to an angle around thelock.

Referring to the drawings, 1 represents the stiles, 2 the cross-bars,and 3 the panels, of the doors.

4 represents the buffer-clamping or tension angle-plates, which aresecured by the screws 5, seated in their perforate screw-seats 6, to oneof the stiles or cross-bars of the doorframe, as the case may be,respective to its application either to straighten in the one case alongitudinal or in the other case a transverse warp, if short clamp barsor rods are used. These buffer-clampingangle-plates are preferablyplaced in the position shown in Fig- I, when the push member 7 of thestraightening device is used (as shown in that figure) attached to theconcave side of the warped door. Thus, as shown in Fig. I, theprojecting angle-lugs 8 of the clamping-plates,

whose perforate centers 9 seat round ends of the preferably squareclamping-bars 10, are placed outside or beyond their angle attachmentlugs. The outer ends of the square clamping-bars 10 are preferablyrounded, so as to provide at the commencement of the square form of eachof said bars a shoulder 12, that 'fits and when clamping respectivelypushes against each of the projecting anglelugs 8.

16 represents a coupling-box block, in the central longitudinaldouble-bevel channeh groove 17 of which the coupling ends of theclamping-bars 10 are seated and tightly held by the cap-plate 18 throughperforationsl9, in the corners of which and in the boxingblock screws 20are seated, the points of which screws are screw-seated at 21 in thestile of the door.

23 represents a rectangular turn in the lower clamping-bar 10 around thelook when rim-locks 2a in contradistinction to mortiselocks 25 areattached on instead of mortised in the doors, and 26 is a tube-bracket,in which said inset portion of the clamping-bar is seated and slides.The said tubck et is secured to'the stile of the door by a screw 27,that passes through the perforate footlug 28 of said tube-bracket, andis screwseated in the stile of the door.

I have shown and described my invention as applied for reducing thelongitudinal warp of a door; but it is evident that the device would beequally applicable for reducing a I transverse warp of the doors or forreducing either longitudinal or transverse warps of shutters, 850., andit can be thus used in a horizontal instead of a vertical position, as

above described. After the door or shutter has been straightened andheld in its rectified position for a sufficientperiod to fully set thesame the straightening devices may then be removed.

The operation of the device is as follows: The buffer-clamping ortension angle-plates L are secured to the stiles of the doors'by screws,shown in Fig. I, when the push or clamping member is used on the concaveside of the warped door.

I will now describe the other elements of the push or clamping member.The round terminals 29, respectively at the upper and lower ends of thetwo coadj utant clamping-bars 10, are seated, respectively, in theperforate centers 9 of the projecting lugs of their buiferclamping angle-plates, and the adjacent shoulders 12 of said clamping-bars pressagainst said lugs. The inner ends of each of the two coadjutantclamping-bars are seated in contact with each other in their respectiveinclined channel-grooves 17 in the couplingbox block 16, the inclines ofwhich provide an elongated bow position to the combined arrangement ofthe push or clamping member of the device. The cap-plate 18 is thenplaced in position 011 the coupling-box over the inner ends 30 of theclamping-bars, and the screws 20 are passed through perforations 19 insaid plate andbox, and are screwed into the stile of the door, thus adjustably drawing the coupling-box sufficiently close to the stile tostraighten or sufficiently near straighten the position of thepreviouslybowed coadjntant clamping-bars, so that the shoulders of saidbars, pushing against the proj ectinglugs of their respectivebuffer-clampin g plates 4, force back the projecting ends of the concave warpedstile, while the coupling-box retains its hold of the center, and thedoorframe is thus straightened. The normal inoperative position of thecoupling-box block 16 before the straighteningprocess commences issufficiently projected from the surface of the stile to provide abundantlatitude for the adjustable driving of the draw-screws to regulate thedegree of the straightening process required for the reduction,respectively, of any varied degree of warp. Thus if the door or otherframe is but slightly warped said coupling-box block, that carries theconjunctive inner ends of the clampingrods 10,will require to be drawnby the screws 20 but a comparatively short distance toward the stile;but when the frame is more largely warped the adjustable block will thenrequire to be drawn closer to the stile, so as to have a more stringenteffect in reducing the more extreme warp. If the other edge of the dooris also warped with a concave presentation, a duplicate clamping deviceis also attached to the stile on that side. If, on the other hand, thereis a concave transverse warp of the frame, the clamping device is ofsubstantially the same construction, except that the clamping-bars aremade shorter to correspond with the width instead of with the length ofthe door. When a rim-lock (instead of a mortise-lock) is used andprojects from the stile on the side to which the device is attached, theadjacent clamping-bar, as previously described, has provided arectangular turn 23,

to avoid the interference of the lock, and is seated and slides in thetube-bracket 26 as the clamping and straightening process isaccomplished.

The device is alike adapted for straightening shutters and other likeframes as well as doors.

\Vhen the frames have been straightened and are set in straightposition, the straightening apparatus can then be removed.

I have shown the device nearly the extreme length of the door-frame; butI do not confine myself to such proportionate length, as it may be madeof any required length to suit the condition of either the longitudinalor transverse warp, sometimes not being required to extend half-way,respectively, of either the length or the breadth of said door or frame.

I claim as my invention 1. In a door or shutter straightener, thecombination of the angle-plates 4, the clamping-bars 10, whose outerterminals engage in the perforate centers of the projecting lugs of saidangle-plates, and the coupling-box block 16, that connects saidclamping-bars, substantially as and for the purpose set forth.

2. In a door or shutter straightener, the combination of theangle-plates 4, provided with the projecting perforate lugs 55, theclamping-bars 10, whose outer ends engage in said perforate lugs, thecoupling-box block provided with double-bevel inclined channelgrooves,in which the inner ends of said clamping-bars are seated, the cap-plate18, and the screws 20, that secure said cap-plate to the block and adjustably secure said block to the stile of the frame arranged tostraighten the same, substantially as and for the purpose set forth.

3. In a door or shutter straightener, the combination of theangle-plates 4, the clamping-bars 10, the coupling-box block thatconnects said clamping-bars, one of said coupling-bars being providedwith a rectangular divergent turn 23, to avoid the door-lock, and thetube-bracket 20, secured to the frame, in whiehtube said divergentportion of the clamping-bar slides, substantially as described, and forthe purpose set forth.

JACOB KAISER.

In presence of- BENJN. A. KNIGHT, SAML. KNIGHT.-

